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Topic: Converting DeviceCMYK to DeviceRGB
Conf: (P-PDF) Developers, Msg: 39782
Date: 5/6/2002 10:10 AM
I've got some images encoded using DCT Decode which I want to convert from DeviceCMYK to DeviceRGB.
I am decoding the data and then using every 4 samples (cmyk) to create 1 rgb value using the formula:-
(page 354 pdf ref manual version 1.3)
Colours are almost correct if I do not use a value for black (as you would expect).
But I don't get the right values if I include a value for b using k. What am I doing wrong? Does k need some manipulation before it becomes b.